Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 630 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
4. 4.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
5. 5.True or false: to record every result is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
8. 8.True or false: to skip writing results is poor testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 370 g, 280 g and 400 g. What is the mean (average) load it held, in grams?
10. 10.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
13. 13.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 300 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 300 g. What is the mean (average) load it held, in grams?
17. 17.True or false: to measure the same way is good testing. (a) True (b) False
18. 18.True or false: to repeat each test is good testing. (a) True (b) False
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design B (b) design C (c) design A
21. 21.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) record every result
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
24. 24.🧪 A paper bridge was tested three times. It held 310 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
26. 26.True or false: to use a new load each time is good testing. (a) True (b) False
27. 27.True or false: to change only one thing is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) guess, do not measure (d) record every result
29. 29.True or false: to repeat each test is poor testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
31. 31.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) change lots at once (d) use the same load
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
35. 35.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to change lots at once is poor testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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